201023132021233 has 4 divisors (see below), whose sum is σ = 201023332175268. Its totient is φ = 201022931867200.

The previous prime is 201023132021221. The next prime is 201023132021263. The reversal of 201023132021233 is 332120231320102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29061662646769 + 171961469374464 = 5390887^2 + 13113408^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201023132021233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201023132021198 and 201023132021207.

It is not an unprimeable number, because it can be changed into a prime (201023132021263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98562868 + ... + 100581733.

It is an arithmetic number, because the mean of its divisors is an integer number (50255833043817).

Almost surely, 2^{201023132021233} is an apocalyptic number.

It is an amenable number.

201023132021233 is a deficient number, since it is larger than the sum of its proper divisors (200154035).

201023132021233 is a wasteful number, since it uses less digits than its factorization.

201023132021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200154034.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 201023132021233 its reverse (332120231320102), we get a palindrome (533143363341335).

The spelling of 201023132021233 in words is "two hundred one trillion, twenty-three billion, one hundred thirty-two million, twenty-one thousand, two hundred thirty-three".